Abstract
AbstractTwo new dyes MA1114 and GZ152 were synthesized to study the effect of conjugated π‐spacers on a D‐A‐π‐A structural framework for dye‐sensitized solar cells (DSSCs). The thiophene and cyclopentadithiophene (CPDT) units were introduced as an extended π‐conjugation for MA1114 and GZ152 dyes, respectively. The DSSCs based on GZ152 dye achieved an efficiency of 8.61% under standard one sun irradiation and 28.31% under 6,000 lux illumination. Introducing an electron‐rich CPDT as the extended π‐conjugated spacer prevails a broad absorption spectral profile, a high dye loading, and an excellent injection efficiency, which all contribute to excellent device performance.
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